Push sigma-based blur interface into our GMs/benches/tests/samplecode

samplecode/SampleStrokePath.cpp

 
 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 #include "SampleCode.h"
 #include "SkCanvas.h"
 #include "SkParsePath.h"
@@ skipping 150 matching lines @@
             canvas->translate(10, 30);
 
             static const SkBlurMaskFilter::BlurStyle gStyle[] = {
                 SkBlurMaskFilter::kNormal_BlurStyle,
                 SkBlurMaskFilter::kInner_BlurStyle,
                 SkBlurMaskFilter::kOuter_BlurStyle,
                 SkBlurMaskFilter::kSolid_BlurStyle,
             };
             for (int x = 0; x < 5; x++) {
                 SkMaskFilter* mf;
-                SkScalar radius = 4;
+                SkScalar sigma = SkFloatToScalar(2.8094f);
                 for (int y = 0; y < 10; y++) {
                     if (x) {
-                        mf = SkBlurMaskFilter::Create(radius, gStyle[x - 1]);
+                        mf = SkBlurMaskFilter::Create(gStyle[x - 1], sigma);
                         paint.setMaskFilter(mf)->unref();
                     }
                     canvas->drawText("Title Bar", 9, x*SkIntToScalar(100), y*SkIntToScalar(30), paint);
-                    radius *= 0.75f;
+                    sigma *= 0.75f;
                 }
 
             }
             return;
         }
 
         paint.setColor(SK_ColorBLUE);
 
 #if 1
         SkPath p;
@@ skipping 26 matching lines @@
         return this->INHERITED::onFindClickHandler(x, y, modi);
     }
 private:
     typedef SampleView INHERITED;
 };
 
 //////////////////////////////////////////////////////////////////////////////
 
 static SkView* MyFactory() { return new StrokePathView; }
 static SkViewRegister reg(MyFactory);